1、. Plastics piping systems - Inj ection-moulded socket fittings for solvent-cemented joints for pressure piping - Test method for resistance to a short-term internal hydrostatic pressure The European Standard EN 804 : 1994 has the status of a British Standard UDC 621.643.413.06-986:678.073:620.1(i2.4
2、 304 : 1995 BS 2782 : %art 11 : Method 1123K : 1995 CEN EN+804 99 3404589 0100187 52b BS EN 804 : 1995 published under the authority comes into effect on 15 July 1995 0 BSI 1995 of the Standards Board and Amd. No. Date The following BSI references relate to the work on this standard : Committee refe
3、rence PR1161 Draft for comment 92145391 DC ISBN O 580 24222 6 Committees responsible for this British Standard %xt affected The preparation of this British Standard was entrusted to Technical Committee PR1/61, Plastics piping systems and components, upon which the following bodies were represented:
4、British Gas plc British Plastics Federation British Plumbing Fittings Manufacturers Association British Valve and Actuator Manufacturers Association Department of the Environment (British Board of Agrment) Department of the Environment (Building Research Establishment) Department of the Environment
5、(Property and Buildings Directorate) Department of Transport Electricity Association Federation of Civil Engineering Contractors Health and Safety Executive Institute of Building Control Institute of Materials Institution of Civil Engineers Institution of Gas Engineers Institution of Water and Envir
6、onmental Management National Association of Plumbing, Heating and Mechanical Services Pipeline Industries Guild Plastics Land Drainage Manufacturers Association Society of British Gas Industries Society of British Water Industries Water Companies Association Water Services Association of England and
7、 Wales Contractors The following bodies were also represented in the drafting of the standard, through subcommittees and panels: ERA Technology Ltd. Engineering Equipment and Materials Users Association RAPRA kchnology Ltd. CEN EN*804 94 = 3404589 0100L88 462 BS EN 804 : 1995 Contents page Committee
8、s responsible Inside front page National foreword 11 Foreword 2 Method 1 Scope 3 2 Principle 3 3 Apparatus 3 4 Est piece 3 5 Procedure 3 6 Test report 4 i CEN EN*804 94 3404589 0100189 3T9 BS EN 804 : 1995 National foreword This British Standard has been prepared by lkchnical Committee PRI61 and is
9、the English language version of EN 804 : 1994 Plastics piping systems - Injection-moulded socket fittings for solvent-cementedjoints for pressure piping - Bst method for resistance to a short-term internal hydrostatic pressure published by the European Committee for Standardization (CEN) . It is inc
10、orporated into BS 2782 Methods of testing plastics Part 11 Thermoplastics pipes, fittings and valves, as Method 1123K : 1995, for association with related test methods for plastics materials and plastics piping components. This test method has been prepared for reference by other standards under pre
11、paration by CEN for specification of plastics piping systems and components. It has been implemented to enable experience of the method to be gained and for use for other fresh applications. It is also for use for the revision or amendment of other national standards as practicable, but it should no
12、t be presumed to apply to any existing standard or specification which contains or makes reference to a different test method until that standard/specification has been amended or revised to make reference to this method and adjust any requirements as appropriate. Warning note. This British Standard
13、, which is identical with EN 804 : 1994, does not necessarily detail all the precautions necessary to meet the requirements of the Health and Safety at Work etc. Act 1974. Attention should be paid to any appropriate safety precautions and the method should be operated by trained personnel only. Comp
14、liance with a British Standard does not of itself confer immunity from legal obligations. ii - CEN EN*804 74 H 3404587 OLOOL90 010 EUROPEAN STANDARD EN 804 NORME EUROPENNE EUROPISCHE NORM April 1994 ULK 621.643.413.0i-98678.073:620.12.4 Descriptors: Plastics, fittings, socket, iqjection mouldings, p
15、ressure, solvent cemented, joint, internal pressure, hydrostatic, test English version Plastics piping systems - Injection-moulded socket fittings for solvent-cemented joints for pressure piping - Test method for resistance to a short-term internal hydrostatic pressure Systmes de canalisations en pl
16、astiques - Raccords mouls par injection joints colls pour canalisations avec pression - Mthode dessai de la rsistance une pression hydrostatique interne de courte dure Kunststoff-Rohrleitungssysteme - Spritzgup- Formstckemit Klebmuffenverbingdungen fr Druckrohrleitungen - Prfverfahren fr die Widerst
17、andsfhigkeit gegen hydrostatischen Kurzzeit- Innendruck This European Standard was approved by CEN on 1994-04- 11. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any a
18、lteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three officiai versions (English, French, German). A version in any other language made by tr
19、anslation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxemb
20、ourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B- 1050 Brussels O 1994 Copyright reserved to CEN members Ref. No. EN
21、804 : 1994 E Page 2 EN 804 : 1994 CEN EN*804 94 m 3404589 OLOOLSL T57 m Foreword This standard has been prepared by CEN/TC 155, Plastics piping systems and ducting systems. This standard is based on the International Standard IS0 2044 : 1974 Unplasticized polyvinyl chloride (PVC) injection-moulded s
22、olvent-welded socket fittings for use with pressure pipe - Hydraulic internul pressure test, published by the International Organization for Standardization (ISO). It is a modification of IS0 2044 : 1974 for reasons of applicability to other plastics materials and/or other test conditions and alignm
23、ent with texts of other standards on test methods. The modifications are: - no material is mentioned; - test parameters, except those common to ai plastics, are omitted; editorial changes have been introduced. - The material-dependent parameters and/or performance requirements are incorporated in th
24、e system standard(s) concerned. No existing European Standard is superseded by this standard. This standard is one of a series of standards on test methods which support system standards for plastics piping systems and ducting systems. This European Standard shall be given the status of a national s
25、tandard, either by publication of an identical text or by endorsement, at the latest by October 1994, and conflicting national standards shall be withdrawn at the latest by October 1994. According to the CENKENELEC Internal Regulations, the following countries are bound to implement this European St
26、andard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, United Kingdom. . CEN EN*804 74 3404587 OLDDL92 773 I Page 3 EN 804 : 1994 1 Scope This standard specifies a method for testing the res
27、istance to internal hydrostatic pressure at 20 OC of injection-moulded thermoplastics fittings for connecting, by means of solvent cementing, to pressure pipes of the same type of material, having a nominal diameter, b) the period of time, t, that the test piece is subjected to pressure. 3 Apparatus
28、 3.1 Presmrizing hice, including thermostatic and/or environmental controls, capable of maintaining the specified hydrostatic pressure, p, (see item a) of the note to clause 2) to within f 2,5 %, for the specified period of time, (see item b) of the note to clause 2), and of maintaining the test pie
29、ce at (20 f 2) OC. 3.2 Pressure gauge, capable of checking conformity to the specified test pressure, p (see 3.1). 4 lkst piece The test piece shall comprise an assembly of one or more pipe sections and fittings including at least one fitting of the type to be tested, solvent-cemented to pipe of the
30、 same type of material. Unless otherwise specified in the referring standard the section(s) of pipe to be connected shall have a length of three times d, with a minimum of 250 mm. They shall be capable of withstanding the test pressure, p, required by the referring standard. Assembling of the test p
31、iece shall be carried out in accordance with the manufacturers instructions. Unless a longer period is required in accordance with the manufacturers instructions, a period of at least 10 days shall be allowed to ensure satisfactory setting of the joint before the following procedure is applied. 5 Pr
32、ocedure In any convenient order carry out the following steps. a) Connect the end of one of the pipe sections of the test piece to the pressurizing device (see 3.1). b) Close by appropriate means the ends of the test piece. e) Fill the test piece with water at (20 f 2) OC, taking care to bleed off a
33、ll internal air. Wait for at least 20 min after filling, to ensure equalization of the temperature to (20 f 2) OC. Suspend or support the test piece so that stresses induced in the test piece by hydrostatic test pressure are not affected by external forces. Apply hydrostatic pressure progressively i
34、n such a way that the test pressure, p, is reached in not less than 30 s and not more than 300 s. Maintain the test piece environment at (20 f 2) OC for the specified period, t, or until prior failure occurs. Maintain the pressure, p, for the specified period, t, checking by means of the pressure ga
35、uge that the pressure is within f 2,5 % and ensuring that no leakage occurs at any area of the test piece, unless prior failure occurs. Inspect the test piece for signs of deterioration, leakage, fracture or any other form of failure as specified by the referring standard. Record the results accordi
36、ngly. Repeat the test if a pipe bursts or if the solvent-cemented joint(s) leak(s) within the specified period of time. CEN EN+804 94 m 3404589 OL00193 82T Page 4 EN 804 : 1994 6 kst report The test report shall include the following information: a) a reference to this standard and to the referring
37、standard; b) the size, type and nominal pressure of the fitting and the material from which the fitting is made; c) the identity of the batch or production run from which the fitting was sampled; d) the type of pipe(s) solvent-cemented to the fitting and the material(s) from which the pipe(s) is(are
38、) made; e) the test pressure, p, in bars); f) the period of time, t, in hours, during which the test piece was subjected to pressure; g) the test temperature, in degrees Celsius; h) whether or not the fitting and/or its joints exhibited any signs of deterioration, leakage, fracture or any other form
39、 of failure as specified by the referring standard; i) if applicable, observations of any failure causing repetition of the test; j) any factors which may have affected the results, such as any incidents or any operating details not specified in this standard; k) the date of test. ) 1 bar = lo5 N/m2
40、. CEN EN*BO4 94 3404589 OLOO19q 366 . BS EN 804 : 1995 BS 2782 : Part 11 : Method 1123K : 1995 BSI 389 Chiswick High Road London W4 4AL 9507-4-0.5k- FP BSI - British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on sta
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